changes way of changing mask options

bower.json

 {
   "name": "image-mask-cropper",
-  "version": "1.4.9",
+  "version": "1.5.0",
   "homepage": "http://gl.pixers.pl:8080/milosz.sobczak/image-mask-cropper/tree/master",
   "authors": [
     "milosz.sobczak@pixers.pl"

dist/image-mask-cropper.js

@@ -177,7 +177,7 @@
                 return false;
             }
             this.options.maskOptions = $.extend(true, this.options.maskOptions, maskOptions);
-            this._init();
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Gets coordinatates of crop.
@@ -258,11 +258,8 @@
          * @return {void}
          */
         setMaskOptionsHeight: function (height) {
-            var yDiff = Math.max((this.options.positionCoords.y + this._setMaskOptionsHeight(height)) - 100, 0);
-
-            this.setPositionCoords({
-                y: this.options.positionCoords.y + yDiff
-            });
+            this._setMaskOptionsHeight(height);
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Setter.
@@ -271,11 +268,8 @@
          * @return {void}
          */
         setMaskOptionsWidth: function (width) {
-            var xDiff = Math.max((this.options.positionCoords.x + this._setMaskOptionsWidth(width)) - 100, 0);
-
-            this.setPositionCoords({
-                x: this.options.positionCoords.x + xDiff
-            });
+            this._setMaskOptionsWidth(width)
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Enables crop plugin option.
@@ -299,6 +293,21 @@
             this.options.enableCrop = false;
             this._updateContainerClass();
         },
+        /**
+         * Gets valid position coords based on mask options.
+         * 
+         * @param  {object} maskOptions
+         * @return {object} crop positions
+         */
+        _getPositionCoordsValid: function (maskOptions) {
+          var xDiff = Math.max((this.options.positionCoords.x + maskOptions.width) - 100, 0),
+              yDiff = Math.max((this.options.positionCoords.y + maskOptions.height) - 100, 0);
+
+          return {
+              x: this.options.positionCoords.x + xDiff,
+              y: this.options.positionCoords.y + yDiff
+          };
+        },
         /**
          * Triggers callback func when crop is moved.
          * @return {void}

package.json

 {
   "name": "image-mask-cropper",
   "description": "Jquery library that gives you ability to move images across container using mask as well",
-  "version": "1.4.9",
+  "version": "1.5.0",
   "author": "Miłosz Sobczak <milosz.sobczak@pixers.pl>",
   "devDependencies": {
     "gulp": "3.9.0",

src/image-mask-cropper.js

@@ -177,7 +177,7 @@
                 return false;
             }
             this.options.maskOptions = $.extend(true, this.options.maskOptions, maskOptions);
-            this._init();
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Gets coordinatates of crop.
@@ -258,11 +258,8 @@
          * @return {void}
          */
         setMaskOptionsHeight: function (height) {
-            var yDiff = Math.max((this.options.positionCoords.y + this._setMaskOptionsHeight(height)) - 100, 0);
-
-            this.setPositionCoords({
-                y: this.options.positionCoords.y + yDiff
-            });
+            this._setMaskOptionsHeight(height);
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Setter.
@@ -271,11 +268,8 @@
          * @return {void}
          */
         setMaskOptionsWidth: function (width) {
-            var xDiff = Math.max((this.options.positionCoords.x + this._setMaskOptionsWidth(width)) - 100, 0);
-
-            this.setPositionCoords({
-                x: this.options.positionCoords.x + xDiff
-            });
+            this._setMaskOptionsWidth(width)
+            this.setPositionCoords(this._getPositionCoordsValid(this.options.maskOptions));
         },
         /**
          * Enables crop plugin option.
@@ -299,6 +293,21 @@
             this.options.enableCrop = false;
             this._updateContainerClass();
         },
+        /**
+         * Gets valid position coords based on mask options.
+         * 
+         * @param  {object} maskOptions
+         * @return {object} crop positions
+         */
+        _getPositionCoordsValid: function (maskOptions) {
+          var xDiff = Math.max((this.options.positionCoords.x + maskOptions.width) - 100, 0),
+              yDiff = Math.max((this.options.positionCoords.y + maskOptions.height) - 100, 0);
+
+          return {
+              x: this.options.positionCoords.x + xDiff,
+              y: this.options.positionCoords.y + yDiff
+          };
+        },
         /**
          * Triggers callback func when crop is moved.
          * @return {void}